/* This file is part of the KDE project
 * Copyright (C) 2011 Thorsten Zachmann <zachmann@kde.org>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#include "DeleteAnchorsCommand.h"

#include <QTextCursor>
#include "KoAnchorInlineObject.h"
#include "KoAnchorTextRange.h"
#include "KoTextDocument.h"
#include "KoInlineTextObjectManager.h"
#include "KoTextRangeManager.h"

#include "TextDebug.h"

#include <algorithm>

bool sortAnchor(KoAnchorInlineObject *a1, KoAnchorInlineObject *a2)
{
    return a1->position() > a2->position();
}

DeleteAnchorsCommand::DeleteAnchorsCommand(const QList<KoShapeAnchor*> &anchorObjects, QTextDocument *document, KUndo2Command *parent)
: KUndo2Command(parent)
, m_document(document)
, m_first(true)
, m_deleteAnchors(false)
{
    foreach (KoShapeAnchor *anchor, anchorObjects) {
        KoAnchorInlineObject *anchorObject = dynamic_cast<KoAnchorInlineObject *>(anchor->textLocation());
        KoAnchorTextRange *anchorRange = dynamic_cast<KoAnchorTextRange *>(anchor->textLocation());
        if (anchorObject && anchorObject->document() == document) {
            m_anchorObjects.append(anchorObject);
        } else if (anchorRange && anchorRange->document() == document) {
            m_anchorRanges.append(anchorRange);
        }
    }
    std::sort(m_anchorObjects.begin(), m_anchorObjects.end(), sortAnchor);
}

DeleteAnchorsCommand::~DeleteAnchorsCommand()
{
    if (m_deleteAnchors) {
        qDeleteAll(m_anchorRanges);
    }
}

void DeleteAnchorsCommand::redo()
{
    KUndo2Command::redo();
    m_deleteAnchors = true;
    if (m_first) {
        m_first = false;
        foreach (KoAnchorInlineObject *anchorObject, m_anchorObjects) {
            QTextCursor cursor(m_document);
            cursor.setPosition(anchorObject->position());
            cursor.deleteChar();
        }
    }
    KoInlineTextObjectManager *manager = KoTextDocument(m_document).inlineTextObjectManager();
    Q_ASSERT(manager);
    if (manager) {
        foreach (KoAnchorInlineObject *anchorObject, m_anchorObjects) {
            manager->removeInlineObject(anchorObject);
        }
    }
    KoTextRangeManager *rangeManager = KoTextDocument(m_document).textRangeManager();
    if (rangeManager) {
        foreach (KoAnchorTextRange *anchorRange, m_anchorRanges) {
            rangeManager->remove(anchorRange);
            m_document->markContentsDirty(anchorRange->position(), 0);
        }
    }
}

void DeleteAnchorsCommand::undo()
{
    KoInlineTextObjectManager *manager = KoTextDocument(m_document).inlineTextObjectManager();
    Q_ASSERT(manager);
    if (manager) {
        foreach (KoAnchorInlineObject *anchorObject, m_anchorObjects) {
            manager->addInlineObject(anchorObject);
        }
    }
    KUndo2Command::undo();
    KoTextRangeManager *rangeManager = KoTextDocument(m_document).textRangeManager();
    if (rangeManager) {
        foreach (KoAnchorTextRange *anchorRange, m_anchorRanges) {
            rangeManager->insert(anchorRange);
            m_document->markContentsDirty(anchorRange->position(), 0);
        }
    }
    m_deleteAnchors = false;
}
